Flexible pipe-joint.



W. A. GREENLAW.

FLEXIBLHPIPB JOINT. APPLICATION FILED APB.20,1908.

Patented Apr. 13, 1909.

Z WarrfillL/i reenlauj arm 1% W by her having at one en UNITED STATES PAT j r anion WARREN A. GREENLAW, OF MELROSE HIGHLANDS, MASSACHUSETTS, -ASSIGNOR TO THE GREENLAW MANUFACTURING COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MAINE.

FLEXIBLE PIPE-JOINT.

Specification of Letters. Patent.

Application filed April 2% 1908.

' Patented April 13,. 1908. Serial magmas.

and useful Improvements in Flexible Pipe- Joints, of which the following is a speclfi cation.

This invention relates to flexible pipe joints and has for its object the roductionof a joint in which the pipe mem er is provided with a ball end ada ted to be positioned by an articulated device Within an enlarged chamber in the other ipe member, means being rovid-ed where y any tend- .ency of said all end to move outwardly will cause the acking interposed between the outer face t ereof and the inner wall of the chamber, to be forced against the faces thereof to more effectually pack the joint under such abnormal conditions.

j The invention consists in certain novel features of construction and arrangement of partswhi ch will be readily understood by reference-to the description of -the drawings and to the claims hereinafter given.

Of. the drawings: Figure 1 re resents a section of a pipe joint embodying t e features of this invention. Fi 2 represents a similar section through t e same, the cutting plane being on line 22 on Fi 1, and Fig. 3 represents an inverted plan 0 the same.

Similar characters designate like (parts rawthroughout the several figures of the ings. e

n the drawings, 10 re resents a pipe meman enlargement 11 containing a chamber 12 considerably larger than the ball of the main portion of the pipe member 10. The end of the enlargement 11 has threaded thereto a cap 13 carrying therewith a packing ringll providing a seat for a ball end 15 of the second pipe member 16. Superimposed upon the packin ring .14 is a packing ring 17 interposed etween' the outer face of the ball 15 and the inner wall of the chamber 12. Su erimposed u on this ring 17.is a bevel edge ring 18 the eveled edges of which are adapted to enter the packing ring 17 and when forced downwardly therein tose arate the same and cause the edges thereo .to be forced against the wall of the chamber 12 and the outer face of the between said connector and said ball 15 to more effectually pack the joint between the same.

A member 19 extends transversely across the chamber 12 and rests upon the upper end of the ring 18', this member havin an annular groove 20 midway of its length 1n which is situated one end of a connector 21 the opposite end of which is seated in a pcripheral concaved groove 22 in a cylindrical member 23 extending across the interior of the ball end 15 with its ends resting in seats 24 formed upon the inner wall of said ball end 15. The bottom of the groove 22' which forms "a seat forthe lower end of the connector 21 is in the center of the ball 15 so that the ipe members 16 may be moved about sai cylinder'in any di'rection to permit the two pipe members to assume positions at various angles relative to one another, the members 19, 21, and 23 being articulated in such a manner as to freely permit this movement.

It is obvious that as constructed any tendency of the ball to move outwardly from the chamber 12' will cause the transthe wall of the chamber 12 and the outer face of the ball 15 and thus more effectually pack the joints to prevent leakage from the chamber 12'.

It is believed that the operation and many advantages of a pi e joint such as is herein described will be fiilly understood without. further, description.

Having thus described my -invention, I claim:

1. In a flexible pipe joint, the combination of a pipe, member having an enlarged chamher at one end; asecond pipe member having a ball end positioned in said chamber; a cap secured to the first-named ipe member for retaining said ball; a packing between said ball and the wall of said chamber; an articulated connector having a seat within the confines of said ball and extending beyond the inner end thereof; and means interposed P i adapted to cause the packing to lmpinge upon said ball whenever said all is moved outwardly from said chamber.

2. In a flexible pipe 0int, the combination of a pipe member aving an enlarged chamber at one end; a second pipe member having a ball end positioned in said chamber; a ca secured to the first-named pi e member or retainin said ball; a packing etween said ball and t e wall of said chamber; an articulated connector having a seat within the confines of said ball and extending beyond the inner end thereof; andabevel edged ring interposed between said connector and said packing adapted to cause the packing to impinge upon said ball whenever said bal is moved outwardly from said chamber. v

3. In a flexible pipe joint, the combination of a pipe member having an enlarged chamber at one end; a second pi e member having a ball end positioned in sa1d chamber; a cap secured to the first-named pipe member provided with a packing ring for retaining said ball; a packing between said ball and the wall of said chamber; an articulated connector having a seat within the confines of said ball and extending beydnd the inner end thereof; and a bevel edged ring interposed between said connector and said packing adapted to cause the packin to impinge upon said ball whenever said all is moved outwardly from said chamber.

4. In a flexible pipe 'oint, the combination of a pipe member avingan enlarged chamber at one end; a second pipenrember having a ball end ositioned in said chamber; a cap secured to t e first-named pipe member for retaining said ball; a packing between said ball and the wall of said chamber; a member extending across the interior of said ball end and seated therein; a transverse -member within said chamber; a connector between said members; and a bevel edged ring interposed between said transverse member and said packing.

5. In a flexible pipe joint, the combination of a pipe member havin an enlarged chamber at one end; asecon' pipe member having a ball end positioned in said chamber; a cap secured to the first-named pipe member;

for retaining said ball; a packing betweensaid ball and the wall of said chamber; a member extending across the interior of said ball end and seated therein having a central peripheral groove; a transverse member within said chamber seated in said groove; and a bevel edged ring interposed between said transverse'member and said packing.

6. In a flexible pipe joint, the combination of a pipe member having an enlarged chamber at one end; a second pipe member having a ball end'positioned in said chamber; a cap secured to the first-named pipe member; and articulated means within said chamber and retained therein by said cap for retaining said ball within said chamber.

7. In a flexible pipe joint, the combination of a pipe member having an enlarged chamber at one end; a second pipe member having a ball end positioned in said chamber; a cap secured to the first-named pipe member; a transverse member, within said chamber; a cylindrical member with a central concave groove seated in said ball end; and a connector between said members and seated in said groove.

8. Ina flexible pipe joint, the combination of a pipe member having an enlarged chamber at one end; a second pipe member having a ball end positioned in said chamber ;-a "cap secured to the first-named pipe member; a transverse member within said chamber; a cylindrical member with a central'concave groove seated in said ball end; and a con nector between said members and seated in said groove the contact between said con nector and the bottom .of said groove being at the center of said ball end.

Signed by me at 7 Water st., Boston, Mass, 7

Witnesses:

WALTER E. LOMBARD, NATHAN G. LOMBARD. 

